Ore-jigger.



UNITED STATES PATENT orrron.

EPHIE'GOHEN, or JoPLIN, MISSOURI;

ORE-JIGGER.

Specification of Letters Patent.

Patented July 28, 1908.

Application iled March 13, 1908. Serial No. 420,782.

To all whom et may concern:

Be it known that I, EPHIE COHEN, a citizen of the United States, and a resident of Joplin, in the county of Jasper and State of Missouri, have invented certain new and useful Improvements in Ore-Jiggers, of which the following is a specification.

My invention is an improvement in ore jiggers and consists in certain novel con-v nection between one ofthe sieve hangers and.

the lever.

In carrying out the invention, I provide a tank 1, having at one end an inlet 2 for the ore, and the tank is preferably divided by a partition 3 into, what for convenience of reference, I term the sieve chamber 4 and the discharge or settling chamber 5, water-being supplied to the tank and ordinarily maintained at about the level of the water line indicated in Fig. 2 of the drawings. A frame 6 is mounted upon the tank and is provided with bearings having a shaft 7 carrying eccentric disks 8 upon which lit the straps 9 having the rods 10 leading downwardly therefrom, and connectedat their lower ends with the innerends of levers A whose outer ends are pivoted at 20 and whose inner ends extend adjacent to each other and connect with their respective rods 10 whereby the levers are rapidly oscillated as the eccentrics A are turned with the revolution of the shaft, the latter turning at a comparatively rapid speed, usually about 140 revolutions per minute. These levers A are balanced somewhat by springs 11 upon rods 12 the said rods being secured at their lower ends to their respective levers A, and extending thence upwardly through frame bars 13 and receiving the springs .11 which bear between. the frame bars 13 and washers 14 of the rods- 12, as best shown in Fig.- 2 of the drawings. The rods 12 connect with the levers A midway between the ends of the said levers, and near the pivoted ends of the levers I connect therewith the hangers B which arepivoted at their lower ends to the sieve 'C extend thence upwardly through slots A1l vin the levers A, and project above the levers and receive springs D, all arranged as best shown in Fig. 4 of the drawings. The purpose of these hangers B is to transmit the motion of the levers A to the sieve, and in this operation it Will be understood that the levers A are raised and lowered by the action of the eccentrics 'and transmit motion through'the hanger rods Bj to the sieve C. This motion howeveri is not transmitted directly to Athe said sieve but indirectly by virtue of the spring D.

The levers are slotted at A1 for the passage .ofthe hangers B so that the said hangers B can move longitudinally along the connection with the lever A, such connection being effected in each instance by means of a cross pin E passing through the lever A and operating 1n a slot B1 in the hanger B. Above the slot B1I the hanger B has a reduced portion B2 and a spring D encircles this reduced portion and bears between a plate B3 at the u per end of the hanger B, and a plate B4c Wllich bears below the spring D, rests upon ythe lever A and is slotted to permit the hanger B to work up and down through it, it being understood that the hanger B works up and down through the plate B4 and the latter f rests on the lever A.

In operation as the lever A is moved up-.

ward by theeccentric the spring D will be put under compression, and after the eccentric has moved the leverA to its highest position, the spring D will expand and give the sieve a still further upward movement, the spring being thus relieved of tension. On the return stroke of the eccentric the spring D being relieved of tension the lever A will start downward and there will be a tendency resulting from the construction described for the ,sieve C to be given a quick downward movement. In this operation as the spring D expands it will lift the hanger until the pin E is at the bottom of the slot B1 so that when the i ing the chains F and having suitable pins I which depend on the lower run of the carrier in the water above the sieve and moving in the direction of the arrow shown in Fig. 2, serve to carry the ore from above the sieve towards the discharge chamber 5 both by positive contact with the ore and by setting up a current in the direction of the chamber 5, as will be understood by those skilled in the art.

In pivoting the levers A at 10 it is preferred to mount them upon cross rods or shafts J, and the said levers A are deflected at their inner ends, as best shown in Fig. 1,

. so they may be brought directly below their respective eccentrics, as will be understood from Figs. l and 3 ofthe drawings. An outlet cock 15 may be rovided for draining the chamber 5 and out ets 24 having valves 25 are provided leading from the bottom of the chamber 4, as shown in Figs. 2 and 3 of the drawings.

I claim- 1. An ore jigger comprising a tank, and sieve movable u and down in the tank, levers pivoted at t eir outer ends and extending inwardly over the sieve, rods connected with the levers and extending upwardly therefrom, s rings on said rods7 eccentrics, straps on sai eccentrics and havin(r rods connected with the inner ends of said Ievers, the levers being rovided near their pivoted ends with verticalpopenings, hangers connected at their lower ends with the sieve vand extending upwardly through the openings in the levers and having slots within the openings or slots of the levers, pins passing through the slots in the hangers and connected with their respective levers, springs on the upward extension of the hangers and bearing between the levers and abutments on the said upward extension of the hangers and a carrier operating between the levers and the sieve, all substantially as and for the purpose as set orth.

2. In an ore jigger the combination with the tank and sieve movable up and down therein and the levers for operating the sieve, of hangers connected with the sieve and provided between their ends with vertically elongated slots, )ins passed through said slots and connected with the levers, the hangers being provided with extensions above the levers and springs on said extensions and bearing between the saine and the levers, substantially as set forth.

3. The combination in an ore jigger substantially as described of a tank and sieve movable up and down in the tank, levers pivoted at their outer ends and extending inwardly over the sieve, rods connected with the levers and extending upwardly therefrom, springs on said rods, eccentrics, straps on said eccentrics and having rods connected with the inner ends of said levers, the levers being provided near their pivoted ends with vertical openings, hangers connected at their lower ends with the sieve and extending upwardly through the openings in the levers and having slots within the o )enings of the levers, pins passing through the slots in the hangers and connected with their respective levers, and springs on the upward extension of the hangers and bearing between the lc'- vers and abutments on the said u )ward extension of the hangers, substantiz` ly as described.

4. The combination of a sieve, levers for operating the sieve and pivoted at one end, means connected with the other ends of said levers Jfor oscillating the saine, hangers between the sieve and their respective levers and yieldingly connected with the latter, rods connected with the levers and extending upwardly therefrom, and springs on said rods substantially as set forth.

EPHIE COHEN Witnesses:

GEO. J. GRAYsTooK, RAY BOND. 

